Q. We make light fixtures. What is the most light reflective paint that
we can apply to the inside of our domes? The dome is made from ABS plastic.

A. To the best of my knowledge white paints are the most reflective, which
is why most of the painted reflective surfaces that we see on light fixtures
are white. Since you are using ABS plastic you have little alternative but to
use an air-drying coating system, and the one that is very popular for such
applications is polyurethane.